Akai AP D33 C Service Manual
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Extracted text from Akai AP D33 C Service Manual (Ocr-read)
Page 2
AP-D33/C
APv055/C
THIS MANUAL IS APPLICABLE TO BOTH SILVER AND BLACK PANEL MODELS
SECTION 1 MODEL AP-BZl/C SERVICE MANUAL ............... 3
SECTION 2 MODEL AP-D33/C and AP-QSS/C SERVICE MANUAL . . . . 9
SECTION 3 PARTS LIST ................................... 37
SECTION 4 SCHEMATIC DIAGRAM .......................... 56
Page 26
AP-D33/C
AP-QSS/C
CHI
--u-
CH2
-> 3.5msec
Fig. 16
4) Quartz-Look Phase Adjustment (V'Rl and VR2)
a) Set the Quartz-Lock Switch to ON (LOCK).
b) Set the Speed Selector to 45 rpm position.
0) Move the Tone Arm to make the power ON.
d) Connect the oscilloscopes CH-l to P5-® and
CH-2 to PS- ©.
e) Set the VR] (500 kB) to mechanical center.
f) Adjust the VR2 (20 kB) so that the phase
different between CH-l and CH-Z is 3.5 msec
as shown in Fig. 16.
g) Connect the oscilloscope to P5-@.
h) Adjust VRl (500 kB) and VR2 (20 kB) so that
the a=b and c=d as shown in Fig. 17.
5) Wow and Flutter Confirmation
a) Put the Quartz Switch to OFF.
b) Playback the test record (3,000 Hz).
c) Check that the Wow and Flutter is to within
0.035% (JIS).
e) If not, re-adjust VR5, VR6 and VR7.
NOTE: Return Sensor Sensitivity Adjustment
Set the Return Sensor Sensitivity Adjust-
ments Semi-Fixed Volume VR4 to fully
clockwise (minimum base voltage of TRS).
In the future, Semi-Fixed Volume VR4 will
changed to Fixed Resistor.
25
Page 53
5. FINAL ASSEMBLY BLOCK
52
AL ASSEMBLY BLOCK
REF. NO. PARTS NO.
5-1
5-2):
5-3
54x
5-5
5-6::
5-7
5-8x
5-9
5-] 0x
5-] l
5-12x
5-] 3x
514
5-1 5
5-16
SK327182
SK327283
SZ3D7812A
523078123
SZSO7BI2A
523078123
SZ307839A
8230783913
52307841A
5230784113
SK325414
SK325415
25325524
BCBGOI338
SP325439
TP3327327
DESC RIPTION
ELEVATION LEVER KNOB
ELEVATION LEVER KNOB(BL)
SPEED CHANGE PUSH
SPEED CHANGE PUsH (BL)
SPEED CHANGE PUSH
SPEED CHANGE PUSH (BL)
QUARTZ PUSH
QUARTZ PUSH (BL)
LED DECORATIONPLATE
LED DECORATION PLATE (BL)
CONTROL KNOB
CONTROL KNOB (BL)
PT BRSOXIZSTL GMT C
DUST COVER PART
REAR PLATE
INSULATOR (B) PART AP-D40
When odering parts, please quote Pans Number, Description and Model Numbe1.--"-